Slimefoot and Squee, Infested Thrinax, and Phyrexian Altar

Prerequisites

• Slimefoot and Squee on the battlefield
• Infested Thrinax in hand
• Phyrexian Altar on the battlefield
• available

Steps

1. Cast Infested Thrinax by paying
2. When Infested Thrinax enters the battlefield, it triggers, causing you to create a number of 1/1 Saproling creature tokens when a nontoken creature you control dies
3. Activate Phyrexian Altar by sacrificing Slimefoot and Squee, adding
4. When Slimefoot and Squee dies, Infested Thrinax triggers, creating three 1/1 Saproling creature tokens
5. Activate Phyrexian Altar by sacrificing Infested Thrinax, adding
6. When Infested Thrinax dies, its delayed ability triggers, creating four 1/1 Saproling creature tokens
7. Activate Phyrexian Altar twice by sacrificing two Saproling tokens, adding
8. Activate Slimefoot and Squee by paying and sacrificing a Saproling, returning it and Infested Thrinax from your graveyard to the battlefield
9. When Slimefoot and Squee and Infested Thrinax enter the battlefield, they each trigger
10. Resolve the Slimefoot and Squee trigger, creating a 1/1 Saproling creature token
11. Resolve the Infested Thrinax trigger, causing you to create a number of 1/1 Saproling creature tokens when a nontoken creature you control dies
12. Activate Phyrexian Altar by sacrificing Slimefoot and Squee, adding
13. When Slimefoot and Squee dies, Infested Thrinax triggers twice, creating six 1/1 Saproling creature tokens
14. You may repeat steps 12 and 13 once for another nontoken creature you control, if desired
15. Activate Phyrexian Altar three times by sacrificing three Saproling tokens, adding
16. Activate Slimefoot and Squee by paying and sacrificing a Saproling, returning it and up to one other creature from your graveyard to the battlefield
17. When Slimefoot and Squee enters the battlefield, it triggers, creating a 1/1 Saproling creature token
18. Repeat from step 12

Results

• Infinite colored mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers